60" Turf Tracer is my favorite mower of all time and cuts 85% of my grass. Works great for me. The reason I use walkbehinds over standers and ZTRs is because my commercial accounts are huge, but a lot of curb hopping and island hopping. Also, my residential are not suited to ZTRs and definately not a stander.
The ECS being hard is a joke of an argument against a TT. Its an easy control system. A 13 year old boy weighing 100 pounds could handle one easy. Jumping curbs is not a problem though you probably have to be a full grown man just because a 60" deck is heavy regardless.